長碼MIMO CDMA系統(tǒng)的快速盲信道估計(jì)方法
Low-Complexity Blind Channel Estimation for Long-Code MIMO CDMA
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摘要: 該文提出一種用于多輸入多輸出CDMA系統(tǒng)的信道快速盲估計(jì)方法。首先,設(shè)計(jì)了具有塊對角結(jié)構(gòu)的解相關(guān)器來消除多址干擾,然后簡單地利用了解相關(guān)輸出的一階統(tǒng)計(jì)量,不需要訓(xùn)練序列,就可很好地估計(jì)出未知信道。該算法簡單,僅用了少量的接收信號,具有較高的精度和魯棒性。仿真結(jié)果表明了該估計(jì)方法的有效性。Abstract: In this paper, a low-complexity blind channel estimation technique is proposed for long-code MIMO CDMA systems. Simply based on the first-order statistic of the decorrelating matched filter output, the channel parameters can be estimated effectively without training sequences. Computer simulations show that the proposed algorithm offers good estimation behavior for MIMO CDMA systems.
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